Thermal Sealing Device

Abstract

A thermal sealing device includes a frame ( 1 ) for supporting the various elements, a handle or grip bar ( 2 ), a roll support ( 3 ) with a roll-carrying shaft, possibly a guide ( 4 ) through which the seal passes, and a device for cutting ( 5 ) the seal, wherein the seal includes a paper seal roll ( 6 ) provided with a thermal adhesive which is activated when it is subjected to the action of a heat source, the sealing device also including an element ( 7 ) for applying the seal and at least one arm ( 9 ) for carrying an element ( 7 ) for applying the seal in an automatic actuation embodiment, a seal heater being provided in both cases, which is normally arranged on the applicator element.

What is claimed is: 
     
         1 . A thermal sealing device, which comprises:
 a frame for supporting different elements of the thermal sealing device;   a grip connected with the frame;   a roll support, with a roll-holder shaft, mounted to the frame, for holding a paper seal roll of paper sealing tape having a thermal adhesive thereon that is activated by heat;   a guide mounted on the frame for guiding the sealing tape;   a cutting device for cutting the sealing tape;   an application element for applying the sealing tape to an object; and   a heater for heating the sealing tape and positioned in the application element.   
     
     
         2 . The thermal sealing device according to  claim 1 , wherein the heater for heating the sealing tape is provided with a heat source, and includes at least one of the following:
 at least one electric resistance,   a gas burner,   a source of infrared radiation, and   a conduit for passing through hot gases.   
     
     
         3 . (canceled) 
     
     
         4 . (canceled) 
     
     
         5 . (canceled) 
     
     
         6 . (canceled) 
     
     
         7 . The thermal sealing device according to  claim 2 , further comprising one of the following elements:
 an electric battery;   a connector for electrical supply from an external source;   a gas tank;   a connector for a gas supply from one of a tank and external conduit; and   a connector for a supply of hot gases.   
     
     
         8 . The thermal sealing device according to  claim 1 , further comprising a device for feeding the sealing tape through the thermal sealing device. 
     
     
         9 . The thermal sealing device according to  claim 8 , further comprising a trigger on the grip for activating the device for feeding the sealing tape through. 
     
     
         10 . The thermal sealing device according to  claim 1 , further comprising a switch on the grip for activating the heater. 
     
     
         11 . The thermal sealing device according to  claim 2 , further comprising a thermal insulation element between the heat source and the seal roll. 
     
     
         12 . The thermal sealing device according to  claim 1 , wherein the cutting device includes a fixed cutting edge which is one of:
 continuous and   in the form of saw teeth.   
     
     
         13 . The thermal sealing device according to  claim 1 , wherein the cutting device includes a manually operated moving blade. 
     
     
         14 . The thermal sealing device according to  claim 13 ,
 further comprising a thermal insulation element between the heater and the seal roll; and   wherein the moving blade is placed in a cold zone one of:
 far away from the heater, and 
 close to the thermal insulation element. 
   
     
     
         15 . The thermal sealing device according to  claim 1 , wherein the guide includes a set of rollers between which the sealing tape runs. 
     
     
         16 . The thermal sealing device according to  claim 15 , wherein the rollers between which the sealing tape runs include an anti-rollback arrangement that ensures that the rollers rotate in a single direction. 
     
     
         17 . The thermal sealing device according to  claim 15 , wherein at least one of the rollers is made of an adhesive-repellent material and is provided with the heater, in the form of a thermal roller. 
     
     
         18 . A thermal sealing device according to  claim 1 , further comprising at least one thermostat for controlling the temperature of the heater. 
     
     
         19 . A thermal sealing device according to  claim 17 , further comprising a device for keeping the sealing tape away from the rollers, and from the thermal roller, in a rest position. 
     
     
         20 . The thermal sealing device according to  claim 1 , further comprising one of the following items:
 a connection for electricity supply from an external source; and   a connection for supply of hot gases.   
     
     
         21 . The thermal sealing device according to  claim 15 , further comprising a finishing roller which is provided with a heater. 
     
     
         22 . The thermal sealing device according to  claim 1 , further comprising an arrangement for separating the heater and the sealing tape. 
     
     
         23 . The thermal sealing device according to  claim 24 , wherein the carrying arm is hinged to the frame and provided with an elastic return. 
     
     
         24 . The thermal sealing device according to  claim 1 , further comprising at least one carrying arm for carrying the application element.